Method for recycling urea-formaldehyde (UF) and raw materials from wood-based panel, and use thereof
US11958942B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2023 |
| Grant date | Apr 16, 2024 |
| Priority date | — |
| Expiry date | Apr 10, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2361/24
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The present disclosure provides a method for recycling urea-formaldehyde (UF) from a wood-based panel. In the present disclosure, the UF is depolymerized by an ultrasonic treatment, and depolymerized UF can be reused for UF manufacture and wood-based panel production. The recycled and treated UF can be repeatedly used in wood-based panel manufacture without affecting performances of the wood-based panel. UF-glued wood-based panels can be recycled, and a recycled wood-based panel raw material can replace at least 50% of a non-recycled wood-based raw material for particle board production without affecting performances of the wood-based panel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.